SU842036A1 - Method of automatic control of waste water electrochemical purification process - Google Patents
Method of automatic control of waste water electrochemical purification process Download PDFInfo
- Publication number
- SU842036A1 SU842036A1 SU782640222A SU2640222A SU842036A1 SU 842036 A1 SU842036 A1 SU 842036A1 SU 782640222 A SU782640222 A SU 782640222A SU 2640222 A SU2640222 A SU 2640222A SU 842036 A1 SU842036 A1 SU 842036A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sodium chloride
- electrodes
- electrolyzer
- voltage
- consumption
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/465—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4612—Controlling or monitoring
- C02F2201/46125—Electrical variables
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Description
Изобретение относится к электрохимической очистке сточных вод и может применяться на предприятиях металлообрабатываквдёй промышленности при автоматизации технологических процессов.The invention relates to electrochemical wastewater treatment and can be used at enterprises of metalworking industry in the automation of technological processes.
Известен способ автоматического регулирования электрофлотационного процесса очистки сточных вод, заключающийся в том, что плотность тока регулируют в зависимости от значения концентрации взвешенных частиц в очищенной воде fl].A known method for automatically controlling the electroflotation process of wastewater treatment, which consists in the fact that the current density is regulated depending on the concentration of suspended particles in the treated water fl].
Наиболее близким по технической сущности к предлагаемому является способ автоматического регулирования процесса электрохимической очис/гки сточных вод путем изменения плотности тока на электродах в зависимости от концентрации растворенного материала электродов в обрабатываемой воде f2].The closest in technical essence to the proposed one is a method for automatically controlling the process of electrochemical treatment / sewage treatment by changing the current density on the electrodes depending on the concentration of the dissolved material of the electrodes in the treated water f2].
Недостаток этого способа заключается в большом расходе электроэнергии и дорогостоящих электродов.The disadvantage of this method is the high consumption of electricity and expensive electrodes.
Цель изобретения - уменьшение расхода электродов и экономия электроэнергии за счет регулирования электропроводности обрабатываемой в •электролизере жидкости.The purpose of the invention is to reduce the consumption of electrodes and save electricity by regulating the electrical conductivity of the liquid processed in the electrolysis cell.
Указанная цель достигается тем, что дополнительно замеряют напряжение на электродах и регулируют плотс ность тока расходом раствора поваэ ренной соли на входе в электролизер.This object is achieved in that the further voltage is measured across the electrodes and adjusted plots NOSTA current solution flow POWA e rennoy salts entering the electrolyzer.
На чертеже представлена блок-схема устройства, осуществляющего способ автоматического регулирования процессом электрохимической очистки сточных вод.The drawing shows a block diagram of a device that implements a method for automatically controlling the process of electrochemical wastewater treatment.
Способ реализуется следующим образом.The method is implemented as follows.
Сточная вода поступает на электролизер 1 с размещенными в нем раст15 воримыми электродами 2. При пропускании электрического тока через загрязненную воду в течение заданного времени в жидкости происходят окислительно-восстановительные химические процессы и коагуляция коллоидных загрязнений. Эти процессы идут . с растворением материала электродов и сопровождаются выделением мелко25 дисперсных пузырьков водорода, обеспечивающих флотацию образующихся хлопьев. На входе промывной воды в электролизер установлен датчик 3 концентрации преобладающего загрязняющего вещества, который соединен через вторичный прибор 4 с управля ютим исполнительным механизмом 5, регулирующим в заданном диапазоне величину напряжения' источника питания. Замеряют величину напряжения на электродах датчиком 6, сигнал с которого поступает на блок 7 регулирования, по управляющему импульсу которого срабатывает исполнительный механизм 8, уменьшая или увеличивая подачу раствора поваренной соли в электролизер 1, изменяя тем самым электропроводность жидкости, а следовательно, и плотность тока при незначительном изменении напряжения источника питания. Концентрация раствора поваренной соли выбирается из соотношенийWastewater enters the electrolyzer 1 with soluble electrodes 2 placed in it. 2. When an electric current is passed through contaminated water for a predetermined time, redox chemical processes and coagulation of colloidal contaminants occur in the liquid. These processes are ongoing. with the dissolution of the material of the electrodes and are accompanied by the release of finely 25 dispersed bubbles of hydrogen, providing flotation of the resulting flakes. At the inlet of the washing water to the electrolyzer, a sensor 3 for the concentration of the predominant pollutant is installed, which is connected via a secondary device 4 to a control actuator 5, which regulates the voltage value of the power source in a predetermined range. Measure the magnitude of the voltage at the electrodes with a sensor 6, the signal from which is supplied to the control unit 7, according to the control pulse of which the actuator 8 is activated, reducing or increasing the supply of sodium chloride solution to the electrolyzer 1, thereby changing the electrical conductivity of the liquid, and therefore the current density at a slight change in the voltage of the power source. The concentration of the sodium chloride solution is selected from the ratios
К - исходная концентрация раствора поваренной соли (г/л);K is the initial concentration of sodium chloride solution (g / l);
Q - объем электролизера (л);Q is the volume of the cell (l);
к - максимальная исходная концентрация преобладающего загрязняющего вещества (г/л);k is the maximum initial concentration of the predominant pollutant (g / l);
U - скорость подачи раствора поваренной соли (л./с) .U is the feed rate of the salt solution (l / s).
t - время обработки сточной воды в электролизере (с) .t is the time of wastewater treatment in the electrolyzer (s).
Скорость подачи солевого раствора тем больше, чем выше концентрация преобладающего загрязняющего вещества в обрабатываемой воде.The rate of delivery of the saline solution is greater, the higher the concentration of the predominant contaminant in the treated water.
Применение изобретения при очистке сточных вод с различными загрязнениями (например, шестивалентный хром, циан, нефтепродукты и др.) с автома тическим регулированием процесса в зависимости от концентрации преобладающего загрязняющего вещества путем подачи раствора поваренной соли позволяет сократить расход материала электродов на 15-20% и снизить расход электроэнергии при обработке 1 м5 стока до 1,5 кВт-ч.The use of the invention in the treatment of wastewater with various contaminants (for example, hexavalent chromium, cyan, petroleum products, etc.) with automatic process control depending on the concentration of the predominant contaminant by supplying sodium chloride solution allows to reduce the consumption of electrode material by 15-20% and reduce energy consumption during processing of 1 m 5 runoff to 1.5 kWh.
Кроме того, экономический эффект от внедрения предлагаемого способа автоматического регулирования процессом электрохимической очистки сточных вод на локальной электрокоагуляционной установке обезвреживания сточных вод гальванического цеха Московского завода АТЭ-1 составляет 31,226 тыс.руб/год.In addition, the economic effect of introducing the proposed method for automatic control of the process of electrochemical wastewater treatment at the local electrocoagulation installation of wastewater treatment in the galvanic shop of the Moscow ATE-1 plant is 31.226 thousand rubles / year.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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SU782640222A SU842036A1 (en) | 1978-05-26 | 1978-05-26 | Method of automatic control of waste water electrochemical purification process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782640222A SU842036A1 (en) | 1978-05-26 | 1978-05-26 | Method of automatic control of waste water electrochemical purification process |
Publications (1)
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SU842036A1 true SU842036A1 (en) | 1981-06-30 |
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SU782640222A SU842036A1 (en) | 1978-05-26 | 1978-05-26 | Method of automatic control of waste water electrochemical purification process |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003104152A1 (en) * | 2002-06-05 | 2003-12-18 | Markos Ninolakis | Electrochemical wet oxidation method for hydrocarbons mixed with water or with soil |
-
1978
- 1978-05-26 SU SU782640222A patent/SU842036A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003104152A1 (en) * | 2002-06-05 | 2003-12-18 | Markos Ninolakis | Electrochemical wet oxidation method for hydrocarbons mixed with water or with soil |
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